Camera optical lens

ABSTRACT

The present disclosure discloses a camera optical lens. The camera optical lens including, in an order from an object side to an image side, a first lens, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens. The first lens is made of glass material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, and the sixth lens is made of plastic material. The camera optical lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Chinese Patent Application Ser. No. 201810203809.2 and Ser. No. 201810203718.9 filed on Mar. 13, 2018, the entire content of which is incorporated herein by reference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to a camera optical lens suitable for handheld devices such as smart phones and digital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand for miniature camera lens is increasing day by day, but the photosensitive devices of general camera lens are no other than Charge Coupled Device (CCD) or Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as the progress of the semiconductor manufacturing technology makes the pixel size of the photosensitive devices shrink, coupled with the current development trend of electronic products being that their functions should be better and their shape should be thin and small, miniature camera lens with good imaging quality therefor has become a mainstream in the market. In order to obtain better imaging quality, the lens that is traditionally equipped in mobile phone cameras adopts a three-piece or four-piece lens structure. And, with the development of technology and the increase of the diverse demands of users, and under this circumstances that the pixel area of photosensitive devices is shrinking steadily and the requirement of the system for the imaging quality is improving constantly, the five-piece, six-piece and seven-piece lens structure gradually appear in lens design. There is an urgent need for ultra-thin wide-angle camera lenses which have good optical characteristics and the chromatic aberration of which is fully corrected.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood with reference to the following drawings. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed to upon clearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera optical lens in accordance with a first embodiment of the present invention;

FIG. 2 shows the longitudinal aberration of the camera optical lens shown in FIG. 1;

FIG. 3 shows the lateral color of the camera optical lens shown in FIG. 1;

FIG. 4 presents a schematic diagram of the field curvature and distortion of the camera optical lens shown in FIG. 1;

FIG. 5 is a schematic diagram of a camera optical lens in accordance with a second embodiment of the present invention;

FIG. 6 presents the longitudinal aberration of the camera optical lens shown in FIG. 5;

FIG. 7 presents the lateral color of the camera optical lens shown in FIG. 5;

FIG. 8 presents the field curvature and distortion of the camera optical lens shown in FIG. 5:

FIG. 9 is a schematic diagram of a camera optical lens in accordance with a third embodiment of the present invention;

FIG. 10 presents the longitudinal aberration of the camera optical lens shown in FIG. 9;

FIG. 11 presents the lateral color of the camera optical lens shown in FIG. 9;

FIG. 12 presents the field curvature and distortion of the camera optical lens shown in FIG. 9.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail with reference to several exemplary embodiments. To make the technical problems to be solved, technical solutions and beneficial effects of the present disclosure more apparent, the present disclosure is described in further detail together with the figure and the embodiments. It should be understood the specific embodiments described hereby is only to explain the disclosure, not intended to limit the disclosure.

Embodiment 1

As referring to FIG. 1, the present invention provides a camera optical lens 10. FIG. 1 shows the camera optical lens 10 of embodiment 1 of the present invention, the camera optical lens 10 comprises 6 lenses. Specifically, from the object side to the image side, the camera optical lens 10 comprises in sequence: an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Optical element like optical filter GF can be arranged between the sixth lens L6 and the image surface Si.

The first lens L1 is made of glass material, the second lens L2 is made of glass material, the third lens L3 is made of plastic material, the fourth lens L4 is made of plastic material, the fifth lens L5 is made of plastic material, and the sixth lens L6 is made of plastic material.

Here, the focal length of the whole camera optical lens 10 is defined as f, the focal length of the first lens is defined as f1. The camera optical lens 10 further satisfies the following condition: 0.5≤f1/f≤10. Condition 0.5≤f1/f≤10 fixes the positive refractive power of the first lens L1. If the lower limit of the set value is exceeded, although it benefits the ultra-thin development of lenses, but the positive refractive power of the first lens L1 will be too strong, problem like aberration is difficult to be corrected, and it is also unfavorable for wide-angle development of lens. On the contrary, if the upper limit of the set value is exceeded, the positive refractive power of the first lens L1 becomes too weak, it is then difficult to develop ultra-thin lenses. Preferably, the following condition shall be satisfied, 1.48≤f1/f≤8.66.

The refractive index of the first lens L1 is defined as n1. Here the following condition should satisfied: 1.7≤n1≤2.2. This condition fixes the refractive index of the first lens L1, and refractive index within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.7≤n1≤2.09.

The refractive index of the second lens L2 is defined as n2. Here the following condition should satisfied: 1.7≤n2≤2.2. This condition fixes the refractive index of the second lens L2, and refractive index within this range benefits the ultra-thin development of lenses, and it also benefits the correction of aberration. Preferably, the following condition shall be satisfied, 1.7≤n2≤2.14.

When the focal length of the camera optical lens 10 of the present invention, the focal length of each lens, the refractive power of the related lens, and the total optical length, the thickness on-axis and the curvature radius of the camera optical lens satisfy the above conditions, the camera optical lens 10 has the advantage of high performance and satisfies the design requirement of low TTL.

In this embodiment, the first lens L1 has a positive refractive power with a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis.

The curvature radius of the object side surface of the first lens L1 is to defined as R1, the curvature radius of the image side surface of the first lens L1 is defined as R2. The camera optical lens 10 further satisfies the following condition: −116.66≤(R1+R2)/(R1−R2)≤−7.23, by which, the shape of the first lens L can be reasonably controlled and it is effectively for correcting spherical aberration of the camera optical lens. Preferably, the condition −72.91≤(R1+R2)/(R1−R2)≤−9.04 shall be satisfied.

The thickness on-axis of the first lens L1 is defined as d1. The following condition: 0.12≤d1≤0.47 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.20≤d1≤0.38 shall be satisfied.

In this embodiment, the second lens L2 has a positive refractive power with a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the second lens L2 is f2. The following condition should be satisfied: 0.77≤f2/f≤3.10. When the condition is satisfied, the positive refractive power of the second lens L2 is controlled within reasonable scope, the spherical aberration caused by the first lens L1 which has positive refractive power and the field curvature of the system then can be reasonably and effectively balanced. Preferably, the condition 1.24≤f2/f≤2.48 should be satisfied.

The curvature radius of the object side surface of the second lens L2 is defined as R3, the curvature radius of the image side surface of the second lens L2 is defined as R4. The following condition should be satisfied: −10.38≤(R3+R4)/(R3−R4)≤−1.94, which fixes the shape of the second lens L2 and when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like chromatic aberration of the on-axis is difficult to be corrected. Preferably, the following condition shall be satisfied, −6.49≤(R3+R4)/(R3−R4)≤−2.42.

The thickness on-axis of the second lens L2 is defined as d3. The following condition: 0.18≤d3≤0.66 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.28≤d3≤0.53 shall be satisfied.

In this embodiment, the third lens L3 has a positive refractive power with a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis.

The thickness on-axis of the third lens L3 is defined as d5. The following condition: 0.15≤d5≤0.54 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.25≤d5≤0.43 shall be satisfied.

In this embodiment, the fourth lens L4 has a positive refractive power with a concave object side surface relative to the proximal axis and a convex image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the fourth lens L4 is f4. The following condition should be satisfied: 0.60≤f4/f≤1.91, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 0.96≤f4/f≤1.53 should be satisfied.

The curvature radius of the object side surface of the fourth lens L4 is defined as R7, the curvature radius of the image side surface of the fourth lens L4 is defined as R8. The following condition should be satisfied: 1.50≤(R7+R8)/(R7−R8)≤4.72, by which, the shape of the fourth lens L4 is fixed, further, when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, 2.40≤(R7+R8)/(R7−R8)≤3.77.

The thickness on-axis of the fourth lens L4 is defined as d7. The following condition: 0.25≤d7≤0.86 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.405d7≤0.68 shall be satisfied.

In this embodiment, the fifth lens L5 has a negative refractive power with a concave object side surface relative to the proximal axis and a convex image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the fifth lens L5 is f5. The following condition should be satisfied: −2.01≤f5/f≤−0.62, which can effectively smooth the light angles of the camera and reduce the tolerance sensitivity. Preferably, the condition −1.26≤f5/f≤−0.77 should be satisfied.

The curvature radius of the object side surface of the fifth lens L5 is defined as R9, the curvature radius of the image side surface of the fifth lens L5 is defined as R10. The following condition should be satisfied: −3.59≤(R9+R10)/(R9−R10)≤−0.98, by which, the shape of the fifth lens L5 is fixed, further, when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −2.24≤(R9+R10)/(R9−R10)≤−1.22.

The thickness on-axis of the fifth lens L5 is defined as d9. The following condition: 0.12≤d9≤0.37 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.18≤d9≤0.30 shall be satisfied.

In this embodiment, the sixth lens L6 has a positive refractive power with a convex object side surface relative to the proximal axis and a concave image side surface relative to the proximal axis.

The focal length of the whole camera optical lens 10 is f, the focal length of the sixth lens L6 is f6. The following condition should be satisfied: 0.85≤f6/f≤3.37, which can effectively reduce the sensitivity of lens group used in camera and further enhance the imaging quality. Preferably, the condition 1.365f6/f≤2.70 should be satisfied.

The curvature radius of the object side surface of the sixth lens L6 is defined as R11, the curvature radius of the image side surface of the sixth lens L6 is defined as R12. The following condition should be satisfied: −25.56≤(R11+R12)/(R11−R12)≤−6.05, by which, the shape of the sixth lens L6 is fixed, further, when beyond this range, with the development into the direction of ultra-thin and wide-angle lenses, problem like aberration of the off-axis picture angle is difficult to be corrected. Preferably, the following condition shall be satisfied, −15.98≤(R11+R12)/(R11−R12)≤−7.57.

The thickness on-axis of the sixth lens L6 is defined as d11. The following condition: 0.39≤d11≤1.36 should be satisfied. When the condition is satisfied, it is beneficial for realization of the ultra-thin lens. Preferably, the condition 0.62≤d11≤1.08 shall be satisfied.

The focal length of the whole camera optical lens 10 is f, the combined focal length of the first lens L1 and the second lens L2 is f12. The following condition should be satisfied: 0.58≤f12/f≤2.00, which can effectively avoid the aberration and field curvature of the camera optical lens, and can suppress the rear focal length for realizing the ultra-thin lens. Preferably, the condition 0.945≤f12/f≤1.60 should be satisfied.

In this embodiment, the total optical length TTL of the camera optical lens 10 is less than or equal to 6.01 mm, it is beneficial for the realization of ultra-thin lenses. Preferably, the total optical length TTL of the camera optical lens 10 is less than or equal to 5.73 mm.

In this embodiment, the aperture F number of the camera optical lens 10 is less than or equal to 2.06. A large aperture has better imaging performance. Preferably, the aperture F number of the camera optical lens 10 is less than or equal to 2.02.

With such design, the total optical length TTL of the whole camera optical lens 10 can be made as short as possible, thus the miniaturization characteristics can be maintained.

In the following, an example will be used to describe the camera optical lens 10 of the present invention. The symbols recorded in each example are as follows. The unit of distance, radius and center thickness is mm.

TTL: Optical length (the distance on-axis from the object side surface of the first lens L1 to the image surface).

Preferably, inflexion points and/or arrest points can also be 2 s arranged on the object side surface and/or image side surface of the lens, so that the demand for high quality imaging can be satisfied, the description below can be referred for specific implementable scheme.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the following, the unit of the focal length, distance, radius and center thickness is mm.

The design information of the camera optical lens 10 in the first embodiment of the present invention is shown in the tables 1 and 2.

TABLE 1 R d nd vd S1 ∞ d0 = −0.293 R1 1.829 d1 = 0.313 nd1 1.7070 v1 56.30 R2 2.200 d2 = 0.248 R3 2.842 d3 = 0.405 nd2 1.7048 v2 56.80 R4 5.048 d4 = 0.317 R5 15.614 d5 = 0.307 nd3 1.6112 v3 21.00 R6 15.498 d6 = 0.199 R7 −2.867 d7 = 0.551 nd4 1.5300 v4 70.00 R8 −1.473 d8 = 0.048 R9 −1.797 d9 = 0.249 nd5 1.6140 v5 25.60 R10 −8.030 d10 = 0.211 R11 1.373 d11 = 0.904 nd6 1.5241 v6 43.32 R12 1.606 d12 = 0.743 R13 ∞ d13 = 0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.721

Where:

In which, the meaning of the various symbols is as follows.

S1: Aperture;

R: The curvature radius of the optical surface, the central curvature radius in case of lens;

R1: The curvature radius of the object side surface of the first lens L1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lens L2;

R4: The curvature radius of the image side surface of the second lens L2;

R5: The curvature radius of the object side surface of the third lens L3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lens L4:

R8: The curvature radius of the image side surface of the fourth lens L4;

R9: The curvature radius of the object side surface of the fifth lens L5;

R10: The curvature radius of the image side surface of the fifth lens L5;

R11: The curvature radius of the object side surface of the sixth lens L6;

R12: The curvature radius of the image side surface of the sixth lens L6;

R13: The curvature radius of the object side surface of the optical filter GF;

R14: The curvature radius of the image side surface of the optical filter GF;

d: The thickness on-axis of the lens and the distance on-axis between the lens;

d0: The distance on-axis from aperture S1 to the object side surface of the first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lens L1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lens L2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lens L3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lens L4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lens L5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lens L6 to the object side surface of the optical filter GF;

d13: The thickness on-axis of the optical filter GF;

d14: The distance on-axis from the image side surface to the image surface of the optical filter GF;

nd: The refractive index of the d line;

nd1: The refractive index of the d line of the first lens L1;

nd2: The refractive index of the d line of the second lens L2;

nd3: The refractive index of the d line of the third lens L3;

nd4: The refractive index of the d line of the fourth lens L4;

nd5: The refractive index of the d line of the fifth lens L5;

nd6: The refractive index of the d line of the sixth lens L6;

ndg: The refractive index of the d line of the optical filter GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

vg: The abbe number of the optical filter GF.

Table 2 shows the aspherical surface data of the camera optical lens 10 in the embodiment 1 of the present invention.

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 R1  4.7137E−01 −0.017181619 0.007733177 −0.011400455 0.01334309 R2  5.2515E−01 −0.026105622 −0.002318567 0.008124999 −0.001280706 R3 −7.3093E+00 0.004510863 −0.03833963 0.003269011 0.037087199 R4  1.2054E+01 −0.056946547 −0.030173308 −0.035619426 0.059416211 R5  0.0000E+00 −0.083578444 −0.035575375 −0.060592176 −0.007492772 R6  0.0000E+00 −0.047923024 0.037424835 −0.14009273 0.1529791 R7  3.2634E+00 −0.046912062 0.05114375 0.075117789 −0.056439929 R8 −3.1995E−01 0.007363048 −0.035809622 0.061955744 −0.036520736 R9 −1.2146E+01 0.012272742 −0.1952385 0.36124319 −0.43157231 R10 −1.3531E+01 −0.16041764 0.23689603 −0.25765774 0.171374 R11 −9.0882E+00 −0.16041764 0.03112275 −0.0022309 −0.0002711 R12 −4.7418E+00 −0.10887968 0.016534044 −0.002962536 0.000319191 Aspherical Surface Index A12 A14 A16 R1 −0.009900682 0.003134459 −0.000355912 R2 −0.013022583 0.00818152 −0.001530936 R3 −0.071955187 0.033393549 −0.002875019 R4 −0.067238207 0.02782825 −0.001445208 R5 0.028065076 0.003562889 −0.00226018 R6 −0.087290183 0.020999744 2.47361E−06 R7 −0.01139295 0.020901991 −0.004407813 R8 0.018274701 −0.002882225 −5.06574E−06 R9 0.3016507 −0.11159027 0.016765666 R10 −0.063735663 1.24E−02 −9.86E−04 R11 1.39E−05 7.62E−06 −7.15E−07 R12 −1.76E−05 3.97E−07 −6.50E−09

Among them, K is a conic index, A4, A6, A8, A10, A12, A14, A16 are aspheric surface indexes.

IH: Image height y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰ +A12x ¹² +A14x ¹⁴ +A16x ¹⁶  (1) P For convenience, the aspheric surface of each lens surface uses the aspheric surfaces shown in the above condition (1). However, the present invention is not limited to the aspherical polynomials form shown in the condition (1).

Table 3 and table 4 show the inflexion points and the arrest point design data of the camera optical lens 10 lens in embodiment 1 of the present invention. In which, P1R1 and P1R2 represent respectively the object side surface and image side surface of the first lens L1, P2R1 and P2R2 represent respectively the object side surface and image side surface of the second lens L2, P3R1 and P3R2 represent respectively the object side surface and image side surface of the third lens L3, P4R1 and P4R2 represent respectively the object side surface and image side surface of the fourth lens L4, P5R1 and P5R2 represent respectively the object side surface and image side surface of the fifth lens L5, P6R1 and P6R2 represent respectively the object side surface and image side surface of the sixth lens L6. The data in the column named “inflexion point position” are the vertical distances from the inflexion points arranged on each lens surface to the optic axis of the camera optical lens 10. The data in the column named “arrest point position” are the vertical distances from the arrest points arranged on each lens surface to the optic axis of the camera optical lens 10.

TABLE 3 Inflexion point Inflexion point Inflexion point Inflexion point number position 1 position 2 position3 P1R1 0 P1R2 1 1.065 P2R1 1 0.705 P2R2 2 0.505 1.175 P3R1 2 0.245 1.125 P3R2 2 0.355 1.205 P4R1 2 0.845 1.315 P4R2 1 1.025 P5R1 1 1.355 P5R2 2 1.185 1.555 P6R1 3 0.485 1.505 2.225 P6R2 1 0.715

TABLE 4 Arrest point Arrest point Arrest point Arrest point number position 1 position 2 position 3 P1R1 0 P1R2 0 P2R1 1 1.005 P2R2 1 0.785 P3R1 1 0.405 P3R2 1 0.575 P4R1 2 1.275 1.325 P4R2 1 1.315 P5R1 0 P5R2 0 P6R1 3 1.105 1.995 2.355 P6R2 1 1.665

FIG. 2 and FIG. 3 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 nm passes the camera optical lens 10 in the first embodiment. FIG. 4 shows the field curvature and distortion schematic diagrams after light with a wavelength of 587.6 nm passes the camera optical lens 10 in the first embodiment, the field curvature S in FIG. 4 is a field curvature in the sagittal direction, T is a field curvature in the meridian direction.

Table 13 shows the various values of the embodiments 1, 2, 3, and the values corresponding with the parameters which are already specified in the conditions.

As shown in Table 13, the first embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.072 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 80.56°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 2

Embodiment 2 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 5 and table 6 show the design data of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 5 R d nd vd S1 ∞ d0 = −0.266 R1 1.849 d1 = 0.268 nd1 1.9885 v1 56.30 R2 2.113 d2 = 0.301 R3 3.262 d3 = 0.352 nd2 2.0831 v2 56.80 R4 4.818 d4 = 0.340 R5 21.989 d5 = 0.357 nd3 1.6616 v3 21.00 R6 21.875 d6 = 0.168 R7 −2.858 d7 = 0.501 nd4 1.5300 v4 70.00 R8 −1.479 d8 = 0.075 R9 −1.748 d9 = 0.231 nd5 1.6140 v5 25.60 R10 −6.147 d10 = 0.190 R11 1.429 d11 = 0.774 nd6 1.4680 v6 48.38 R12 1.782729 d12 = 0.724 R13 ∞ d13 = 0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.702

Table 6 shows the aspherical surface data of each lens of the camera optical lens 20 in embodiment 2 of the present invention.

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 R1  4.5636E−01 −0.019603927 0.008197212 −0.01110326 0.013327216 R2  6.0709E−01 −0.023293096 −0.001862369 0.008686451 −0.000806692 R3 −8.7560E+00 0.004930058 −0.037085766 0.003436121 0.03706246 R4  1.1924E+01 −0.054806049 −0.03047292 −0.035834876 0.059267101 R5  0.0000E+00 −0.080412317 −0.034539496 −0.059800014 −0.006744771 R6  0.0000E+00 −0.045921484 0.040373743 −0.13833777 0.15359602 R7  3.3402E+00 −0.041947046 0.051257843 0.075204069 −0.056266513 R8 −3.4786E−01 0.008879074 −0.034680194 0.062767973 −0.036069545 R9 −1.4001E+01 0.008735072 −0.19283333 0.36026966 −0.43268132 R10 −1.0572E+02 −0.15930766 0.23688279 −0.25779348 0.1713256 R11 −1.2592E+01 −0.15930766 0.031140553 −0.002240038 −0.000272275 R12 −6.4422E+00 −0.10942949 0.016049778 −0.002988176 0.000318329 Aspherical Surface Index A12 A14 A16 R1 −0.010083296 0.002899316 −0.00057677 R2 −0.01280638 0.008182688 −0.00165582 R3 −0.071874814 0.033587832 −0.00263418 R4 −0.067426693 0.027664027 −0.001609566 R5 0.028770121 0.003996465 −0.001964043 R6 −0.087152202 0.021016074 1.33878E−07 R7 −0.011231988 0.020954775 −0.004419485 R8 0.018498748 −0.002774827 5.41833E−05 R9 0.30117413 −0.11157612 0.016984034 R10 −0.063751251 1.24E−02 −9.84E−04 R11 1.39E−05 7.66E−06 −7.04E−07 R12 −1.76E−05 3.99E−07 −5.69E−09

Table 7 and table 8 show the inflexion points and the arrest point design data of the camera optical lens 20 lens in embodiment 2 of the present invention.

TABLE 7 Inflexion point Inflexion point Inflexion point Inflexion point number position 1 position 2 position3 P1R1 0 P1R2 0 P2R1 1 0.695 P2R2 1 0.525 P3R1 2 0.215 1.095 P3R2 2 0.305 1.175 P4R1 2 0.825 1.295 P4R2 1 0.985 P5R1 1 1.335 P5R2 2 1.165 1.535 P6R1 3 0.455 1.525 2.295 P6R2 1 0.655

TABLE 8 Arrest point Arrest point number position 1 P1R1 0 P1R2 0 P2R1 1 0.995 P2R2 1 0.805 P3R1 1 0.355 P3R2 1 0.515 P4R1 1 1.265 P4R2 1 1.265 P5R1 0 P5R2 0 P6R1 1 0.995 P6R2 1 1.405

FIG. 6 and FIG. 7 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 nm passes the camera optical lens 20 in the second embodiment. FIG. 8 shows the field curvature and distortion schematic diagrams after light with a wavelength of 587.6 nm passes the camera optical lens 20 in the second embodiment.

As shown in Table 13, the second embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.0178 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 82.06°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

Embodiment 3

Embodiment 3 is basically the same as embodiment 1, the meaning of its symbols is the same as that of embodiment 1, in the following, only the differences are described.

Table 9 and table 10 show the design data of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 9 R d nd vd S1 ∞ d0 = −0.270 R1 1.869 d1 = 0.244 nd1 1.7205 v1 56.30 R2 1.934 d2 = 0.188 R3 2.599 d3 = 0.443 nd2 1.7479 v2 56.80 R4 5.330 d4 = 0.314 R5 9.077 d5 = 0.348 nd3 1.6274 v3 21.73 R6 8.943 d6 = 0.227 R7 −2.950 d7 = 0.571 nd4 1.5300 v4 70.00 R8 −1.473 d8 = 0.047 R9 −1.925 d9 = 0.247 nd5 1.6140 v5 25.60 R10 −10.191 d10 = 0.194 R11 1.254 d11 = 0.804 nd6 1.5025 v6 48.72 R12 1.532563 d12 = 0.823 R13 ∞ d13 = 0.210 ndg 1.5168 vg 64.17 R14 ∞ d14 = 0.801

Table 10 shows the aspherical surface data of each lens of the camera optical lens 30 in embodiment 3 of the present invention.

TABLE 10 Conic index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16 R1  4.3563E−01 −0.018730491 0.005994074 −0.011339813 0.013763888 −0.009717602 0.003037163 −0.000615755 R2  3.3252E−01 −0.029859405 −0.003270151 0.008955695 −0.001492273 −0.013457486 0.007858749 −0.001713445 R3 −5.3454E+00 0.010474349 −0.033386094 0.003934801 0.036686126 −0.072458255 0.032778926 −0.003519662 R4  1.2675E+01 −0.054353002 −0.02.8772252 −0.035673464 0.05909113 −0.067195525 0.027970234 −0.001370672 R5  0.0000E+00 −0.087461822 −0.035832547 −0.060452609 −0.007031511 0.028546509 0.003857142 −0.002141715 R6  0.0000E+00 −0.0525127 0.036474632 −0.13986403 0.15297888 −0.087481232 0.020810036 −0.000136594 R7  3.1957E+00 −0.042551977 0.05133762 0.074849642 −0.05667365 −0.011548526 0.020785904 −0.004489282 R8 −3.2964E−01 0.008251064 −0.035365612 0.061958292 −0.036552628 0.018271223 −0.002848161 3.06256E−05 R9 −1.4070E+01 0.016390639 −0.19678904 0.36025084 −0.43191046 0.30159956 −0.11152177 0.016848577 R10 −1.9617E+01 −0.15865386 0.23733754 −0.25765676 0.17136455 −0.063739455 1.24E−02 −9.84E−04 R11 −7.4596E+00 −0.15865386 0.030994078 −0.002244454 −0.000272155 1.38E−05 7.63E−06 −7.09E−07 R12 −4.6139E+00 −0.10796136 0.016582831 −0.002948247 0.000319932 −1.77E−05 3.77E−07 −9.01E−09

Table 11 and table 12 show the inflexion points and the arrest point design data of the camera optical lens 30 lens in embodiment 3 of the present invention.

TABLE 11 Inflexion point Inflexion point Inflexion point Inflexion point P1R1 0 P1R2 1 1.035 P2R1 1 0.755 P2R2 2 0.495 1.175 P3R1 2 0.315 1.105 P3R2 2 0.435 1.235 P4R1 2 0.805 1.365 P4R2 1 1.015 P5R1 1 1.345 P5R2 2 1.155 1.625 P6R1 3 0.515 1.515 2.155 P6R2 1 0.715

TABLE 12 Arrest point Arrest point Arrest point Arrest point P1R1 0 P1R2 0 P2R1 1 1.035 P2R2 1 0.775 P3R1 1 0.505 P3R2 1 0.685 P4R1 1 1.235 P4R2 1 1.305 P5R1 0 P5R2 0 P6R1 3 1.215 1.855 2.345 P6R2 1 1.675

FIG. 10 and FIG. 11 show the longitudinal aberration and lateral color schematic diagrams after light with a wavelength of 486.1 nm, 587.6 nm and 656.3 nm passes the camera optical lens 30 in the third embodiment. FIG. 12 shows the field curvature and distortion schematic diagrams after light with a wavelength of 587.6 nm passes the camera optical lens 30 in the third embodiment.

As shown in Table 13, the third embodiment satisfies the various conditions.

In this embodiment, the pupil entering diameter of the camera optical lens is 2.0478 mm, the full vision field image height is 3.512 mm, the vision field angle in the diagonal direction is 81.23°, it has wide-angle and is ultra-thin, its on-axis and off-axis chromatic aberrations are fully corrected, and it has excellent optical characteristics.

TABLE 13 Embodiment Embodiment Embodiment 1 2 3 f 4.144 4.036 4.096 f1 11.357 9.948 29.955 f2 8.572 8.342 6.340 f3 1.107E+07 2.621E+04 9.558E+06 f4 5.026 5.136 4.894 f5 −3.829 −4.059 −3.909 f6 7.739 9.067 6.988 f12 5.081 4.718 5.474 (R1 + R2)/(R1 − R2) −10.851 −15.016 −58.331 (R3 + R4)/(R3 − R4) −3.575 −5.190 −2.903 (R5 + R6)/(R5 − R6) 267.413 383.411 134.265 (R7 + R8)/(R7 − R8) 3.113 3.144 2.994 (R9 + R10)/(R9 − R10) −1.577 −1.795 −1.466 (R11 + R12)/(R11 − R12) −12.782 −9.081 −10.008 f1/f 2.741 2.465 7.314 f2/f 2.069 2.067 1.548 f3/f 2.672E+06 6.494E+03 2.334E+06 f4/f 1.213 1.273 1.195 f5/f −0.924 −1.006 −0.954 f6/f 1.868 2.247 1.706 f12/f 1.226 1.169 1.337 d1 0.313 0.268 0.244 d3 0.405 0.352 0.443 d5 0.307 0.357 0.348 d7 0.551 0.501 0.571 d9 0.249 0.231 0.247 d11 0.904 0.774 0.804 Fno 2.000 2.000 2.000 TTL 5.426 5.193 5.461 d1/TTL 0.058 0.052 0.045 d3/TTL 0.075 0.068 0.081 d5/TTL 0.057 0.069 0.064 d7/TTL 0.102 0.096 0.105 d9/TTL 0.046 0.044 0.045 d11/TTL 0.167 0.149 0.147 n1 1.7070 1.9885 1.7205 n2 1.7048 2.0831 1.7479 n3 1.6112 1.6616 1.6274 n4 1.5300 1.5300 1.5300 n5 1.6140 1.6140 1.6140 n6 1.5241 1.4680 1.5025 v1 56.3000 56.3000 56.3000 v2 56.8000 56.8000 56.8000 v3 20.9999 20.9972 21.7277 v4 70.0001 70.0014 70.0003 v5 25.6000 25.6000 25.6000 v6 43.3190 48.3758 48.7188

It is to be understood, however, that even though numerous characteristics and advantages of the present exemplary embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms where the appended claims are expressed. 

What is claimed is:
 1. A camera optical lens comprising, from an object side to an image side in sequence: a first lens, a second lens having a positive refractive power, a third lens having a positive refractive power, a fourth lens, a fifth lens, and a sixth lens; wherein the camera optical lens further satisfies the following conditions: 0.5≤f1/f≤10; 1.7≤n1≤2.2; 1.7≤n2≤2.2; where f: the focal length of the camera optical lens; f1: the focal length of the first lens; n1: the refractive index of the first lens; n2: the refractive index of the second lens.
 2. The camera optical lens as described in claim 1, wherein the first lens is made of glass material, the second lens is made of glass material, the third lens is made of plastic material, the fourth lens is made of plastic material, the fifth lens is made of plastic material, the sixth lens is made of plastic material.
 3. The camera optical lens as described in claim 1 further satisfying the following conditions: 1.48≤f1/f≤8.66; 1.7≤n1≤2.09; 1.7≤n2≤2.14;
 4. The camera optical lens as described in claim 1, wherein first lens has a positive refractive power with a convex object side surface and a concave image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: −116.66≤(R1+R2)/(R1−R2)≤−7.23; 0.12 mm≤d1≤0.47 mm; where R1: the curvature radius of object side surface of the first lens; R2: the curvature radius of image side surface of the first lens; d1: the thickness on-axis of the first lens.
 5. The camera optical lens as described in claim 4 further satisfying the following conditions: −72.91≤(R1+R2)/(R1−R2)≤−9.04; 0.20 mm≤d1≤0.38 mm.
 6. The camera optical lens as described in claim 1, wherein the second lens has a convex object side surface and a concave image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: 0.77≤f2/f≤3.10; −10.38≤(R3+R4)/(R3−R4)≤−1.94; 0.18 mm≤d3≤0.66 mm; where f: the focal length of the camera optical lens; f2: the focal length of the second lens; R3: the curvature radius of the object side surface of the second lens; R4: the curvature radius of the image side surface of the second lens; d3: the thickness on-axis of the second lens.
 7. The camera optical lens as described in claim 6 further satisfying the following conditions: 1.24≤f2/f≤2.48; −6.49≤(R3+R4)/(R3−R4)≤−2.42; 0.28 mm≤d3≤0.53 mm.
 8. The camera optical lens as described in claim 1, wherein the third lens has a convex object side surface and a concave image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: 0.15 mm≤d5≤0.54 mm; where d5: the thickness on-axis of the third lens.
 9. The camera optical lens as described in claim 8 further satisfying the following conditions: 0.25 mm≤d5≤0.43 mm.
 10. The camera optical lens as described in claim 1, wherein the fourth lens has a positive refractive power with a concave object side surface and a convex image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: 0.60≤f4/f≤1.91; 1.50≤(R7+R8)/(R7−R8)≤4.72; 0.25 mm≤d7≤0.86 mm; where f: the focal length of the camera optical lens; f4: the focal length of the fourth lens; R7: the curvature radius of the object side surface of the fourth lens; R8: the curvature radius of the image side surface of the fourth lens; d7: the thickness on-axis of the fourth lens.
 11. The camera optical lens as described in claim 10 further satisfying the following conditions: 0.96≤f4/f≤1.53; 2.40≤(R7+R8)/(R7−R8)≤3.77; 0.40 mm≤d7≤0.68 mm.
 12. The camera optical lens as described in claim 1, wherein the fifth lens has a negative refractive power with a concave object side surface and a convex image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: −2.01≤f5/f≤−0.62; −3.595(R9+R10)/(R9−R10)≤−0.98; 0.12 mm≤d9≤0.37 mm; where f: the focal length of the camera optical lens; f5: the focal length of the fifth lens; R9: the curvature radius of the object side surface of the fifth lens; R10: the curvature radius of the image side surface of the fifth lens; d9: the thickness on-axis of the fifth lens.
 13. The camera optical lens as described in claim 12 further satisfying the following conditions: −1.26≤f5/f≤−0.77; −2.24≤(R9+R10)/(R9−R10)≤−1.22; 0.18 mm≤d9≤0.30 mm.
 14. The camera optical lens as described in claim 1, wherein the sixth lens has a positive refractive power with a convex object side surface and a concave image side surface to the proximal axis; the camera optical lens further satisfies the following conditions: 0.85≤f6/f≤3.37; −25.56≤(R11+R12)/(R11−R12)≤−6.05; 0.39 mm≤d11≤1.36 mm; where f: the focal length of the camera optical lens; f6: the focal length of the sixth lens; R11: the curvature radius of the object side surface of the sixth lens; R12: the curvature radius of the image side surface of the sixth lens; d11: the thickness on-axis of the sixth lens.
 15. The camera optical lens as described in claim 14 further satisfying the following conditions: 1.36≤f6/f≤2.70; −15.98≤(R11+R12)/(R11−R12)≤−7.57; 0.62 mm≤d11≤1.08 mm.
 16. The camera optical lens as described in claim 1 further satisfying the following condition: 0.58 mm≤f12/f≤2.00 mm; where f12: the combined focal length of the first lens and the second lens; f: the focal length of the camera optical lens.
 17. The camera optical lens as described in claim 16 further satisfying the following condition: 0.94≤f12/f≤1.60.
 18. The camera optical lens as described in claim 1, wherein the total optical length TTL of the camera optical lens is less than or equal to 6.01 mm.
 19. The camera optical lens as described in claim 18, wherein the total optical length TTL of the camera optical lens is less than or equal to 5.73 mm.
 20. The camera optical lens as described in claim 1, wherein the aperture F number of the camera optical lens is less than or equal to 2.06.
 21. The camera optical lens as described in claim 20, wherein the aperture F number of the camera optical lens is less than or equal to 2.02. 